Question 1161894

{{{2.5x+2.5*(x+8)=360}}}

{{{2.5x+2.5x+20=360}}}

{{{5x=340}}}

{{{x=340/5}}}

{{{x=68}}}

Linda's speed: {{{x=68mph}}}

Helen's speed: {{{x+8=68+8=76mph}}}


check the distance:

{{{d[1]=s[L]t}}}....eq.1
{{{d[2]=s[E]t}}}.....eq.2


{{{d[1]=68*2.5=170}}}...eq.1
{{{d[2]=76*2.5=190}}}......eq.2

{{{d[1]+d[2]=170+190=360mil}}}